When was the Department of Defense established?

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Multiple Choice

When was the Department of Defense established?

Explanation:
The main concept here is when the Department of Defense was created and why that date matters. The Department of Defense was established by the National Security Act of 1947, which merged the War Department (Army) and the Navy Department and created the Air Force as a separate service. The act took effect in 1947, with September 18, 1947 commonly cited as the establishment date. So the accurate year is 1947, not 1949. The other years don’t reflect the creation of the DoD: 1913 predates it by several decades, 1945 marks the end of World War II, and 1961 is well after the DoD’s formation. If you’re choosing from the provided options, none matches the true establishment date, which is why understanding the 1947 formation is the key take-away.

The main concept here is when the Department of Defense was created and why that date matters. The Department of Defense was established by the National Security Act of 1947, which merged the War Department (Army) and the Navy Department and created the Air Force as a separate service. The act took effect in 1947, with September 18, 1947 commonly cited as the establishment date. So the accurate year is 1947, not 1949. The other years don’t reflect the creation of the DoD: 1913 predates it by several decades, 1945 marks the end of World War II, and 1961 is well after the DoD’s formation. If you’re choosing from the provided options, none matches the true establishment date, which is why understanding the 1947 formation is the key take-away.

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